Yes, prices are set by the margin, so small changes in supply and demand can have outsized effects on prices.
But the article completely falls apart here:
> If you are money laundering... The objective is to move as much cash, as fast as possible. This often involves large assets, and the bigger the price – the better... Both the seller and the money laundering buyer want the highest acceptable price... Competition between interests align, and there’s minimal friction preventing prices from going higher.
This gets it completely opposite and wrong. It doesn't matter if you're laundering money or not -- you still want the best deal on an asset. You still want to sell eventually, and the lower your buying price, the more profit you'll make later. Everybody still wants to make a profit.
A launderer will always prefer to buy 2 properties at a market value of $1 million each, over buying one of those at an inflated $2 million. Always. The laws of supply and demand don't disappear just because you're laundering money.
The idea that "the objective is to move as much cash, as fast as possible" is totally made-up and totally ludicrous. The idea is to move the amount you have, in a reasonable timeframe, at the most profitable price.
The only reason money launderers can have an outsized effect on the real estate market is because they generate more demand. Period. But that demand is no different from legitimate buyers. Demand is demand. That's the entire story.
(Of course, if laws around LLC's and scrutiny around real estate deals were changed then that demand might dry up. But that doesn't have anything to do with the laws of economics.)